Scucci
Well-known member
I'm working on a friends Road Kings MPU right now... severe battery damage. I've repaired everything I saw. I'm working with Leon's test ROM now, just pulsing the PIAs. PA1 and PB1 are stuck(high) on all PIAs... I don't know enough (or anything really) about the workings on 6821 PIAs. What am I missing that would effect PA1 (pin3) and PB1 (pin11) ?